Growth and characterization of conductive SrRuO3 and LaNiO3 multilayers ontextured Ni tapes for high-J(c) YBa2Cu3O7-delta coated conductors

Power applications of high-temperature superconducting (HTS) coated conduct ors will require stabilization against thermal runaway. We have developed c onductive buffer layers to electrically couple the HTS layer to the underly ing metal substrate. The structure comprises the layer sequence of SrRuO3 ( SRO) on LaNiO3 (LNO) on biaxially textured Ni substrates. We report baselin e investigations of compatibility of SRO/LNO multilayer structure with proc essing of YBa2Cu3O7-delta (YBCO) and demonstrate biaxially textured YBCO fi lms on conductively buffered Ni tapes. These YBCO coatings exhibit self-fie ld J(c) values as high as 1.3 x 10(6) A/cm(2) at 77 K, and the entire struc ture (HTS + conductive buffers + metal substrate) shows good electrical con nectivity. These results demonstrate that SRO/LNO buffer layers may provide a basis for stabilized coated conductors.